Clamping device for elastic tires



Sl* E R I T G .H r

s TUMM S mm o RP 0E Mw .m TD .G .JN I P M A L G (No Model.)

Patented Feb'. 16, l1892.

w/rNEssEs A TTOHNEYS UNITED STATES PATENT 'l OFFICE.A

JESSE' T. MORRIS, JR., OE PORTSMOUTH, VIRGINIA.`

CLAMP-ING DEVICE FOR ELASTIC TIRES.

l SPECIFICATION forming part of Letters Patent No. 469,165, dated February 16, 1892.

' Application led October 6, 1891. Serial No. 407,849. (No model.)

which the following is a full, clear, and exact description.

This invention relates to an improved device for securing the elastic tires of bicyclewheels in place on the wheel-rims without cement; and it consists in the construction and combination of parts, as hereinafter described and claimed. y

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

. Figure l is a partial side elevation of 'a bicycle-wheel and an elastic tire, partly broken away and in section and showing the clamping device applied. Fig. 2is atransverse section of the same, taken on the line 2,2 in Fig. l, showing part of the clamping device in a slightly-changed position. Fig. 3 is a side view, partly broken away and in section, of the elastic tire, showing the clamping device applied. Figs. 4t and 5 are transverse sectional views showing modified constructions of the wheel-rim and tire with the clamping device applied. Fig. (i is a side view in section, reduced, showing a modified means for drawing toward each other the end portions of a clamping-ring that is an essential feature of theinvention; and Fig. 7 is au enlarged reverse planviewr of a portion of the device shown in Fig. 6.

As usually constructed, elastic tires for bicycles and other similar Wheeled vehicles are made of such a diameter relative to the channeled rim of the wheels that they require to be considerably expanded in order that they may be placed in position, and when seated are still in a stretched condition. This expanded condition of the tire frequentlycauses a gaping crevice or fissure to be produced therein, as the result of a cut or puncture in the tread of the tire due to impact on a sharp stone or like obstacle when in service, resulting in a permanent-injury to the tire.

Commonly the elastic tires of bicycles arel attached by cement to the Wheel-rims, and from rough service often become loose while on the road, so as to partly or entirely disablel the vehicle. ford means to clamp an elastic tire to the wheelrim throughout its circumference without using cement and hold the parts together with the tire in an unstretched condition, so that cuts or punctures in the tire will not be expanded and the durability of the tire be The present invention Will aff considerably increased. Furthermore, the

tire may be quickly tightened in place or removed, the improvement being applicable to all kinds of tubular or hollow tires that are elastic or slightly yielding, as will appear in vthe detailed description of the Several figures of the drawings.

The tire A is made continuous and may be formed variously, as shown in cross-section in Figs. 2, 4, and 5. WVithin the continuous hollow tire A there is an elastic ring of metal embedded when the tire is formed, as Shown at B in Fig. 4, or, preferably, the ring is inserted in a slit or aperture in the tire, so that said comparatively thin ring of Inetal will lie in contactwith the inner surface on the side nearest to the Wheel-rim C. As shown in Fig. 1, the clamping-ring- B iS not integral, but has its ends lapped, as at c., so that these terminal portions may slide together. At a proper distance from each of the ends c, on

lthe clamping-ring B a stud-bolt D is secured which nuts have each a lateral bolt-extension C', and upon the hubs that are eXteriorly threaded jam-nuts F" are placed. The projecting extensions C are cut. with oppositelypitched threads, and on them is placed a sleeve-nut G, threaded to mate the right and left hand threads on the bolt ends, Which will cause the studs D to be moved in the slots b when said nut is rotated.

To clamp the tire A upon the wheel-rim C,

the tire is sprung upont-he latter and is of such a proportionatediameter tlteretothatit will. loosely engage the same. When the tire is in place, the stud-bolts D should project from the inner surface of the rim C, as before eX- plainled, and the parts connected7 as shown in 1g. a direction that will draw the ends of the bolt-extensions C toward `each other will con.y

tract the diameter of the ring B; and thereby' clamp the tire Aon the rim C throughout its surface of. contact thereom.

It Willbe evident that the described means for holding the tire A in -placeonva Wheelriin-f C will leave the tread portion of the tire unstretched,so `Vthat-a transversecutin the outery snrfacefof. thetire=willnot result in. a :ga-ping fissure;A butavill Vbey closed by the construction.'- of-fthe clamping-ringB; soth'atfa tire may. be-

Worn.-till1it,is?too-thin for service- Without a rupture.

Iftheclalnping-ring B.is-to Ibefused: in con nection with an velas-t-ictire'of.y the. tubularv .forms shown in Figs. 4 and 5, thev ringgmayi thefstufbbol tsf. m jbef si milarly A,co nnectedtI tor.-`

ihe=.='ring 3. Inieither-instance thering isfgiven.; a-cnrzvatnre'` corresponding tothatiot thetire,A Themodiedfffmeans for drawing thevstudff bolts-eD?` toward each. otherfthat is shown inf.

Y. Fi gsa and4 7 consi st.'` iii-an extension-.off the:`

their-.fr lowerportion s; 'and reducinthiea-body off.saidrshanks-zneartheii'zloWenends-toadapt; each-to fpassifthrough an eye G25 t'omnedfonthe endoof fthe-a-boltsf C',- which latten may. 'bef aligned# and#theffsleeve-'nunGev placed upon. them;;asbeforeexplained; ThefshanksF? are. secured infplacefzbya fixed-aWasher:onl their.;

The rotation ot-the sleeve-nut G in free terminals that loosely bears onithe bolteyesi Gfsofthat the nut-s:` Ff andtth'eirshanks, may be rotated to secure the plates E in place and hold the ends of the plate B in clamped adjustment.

Having thus described my invention, I claim as new'anddesire' to secu re 'f by Letters Patent- 1.. The combination, .with a wheel having a concave slotted rim anda hollow elastic tire hav-ing slots coinciding with the slots of the rim, of. a ringinthetire having overlapping ends and provided with stud-bolts projecting through thev slots of the tire and rim, nuts on the studbolts, oppositely-threaded bolts se- 4cured to the sa-idifnuts, andi a zsle'eveenuten-V gagingthesaid'oppositely-threadedbolts; substantially asldescribed;

2...'l`he1-co1nbination, with la .Whee'l-fhavin gia s concavewrimand slotsf intersectingzfth'e; con-` l cavity inV thee-,rim `and a :l1ollovwelasticitirefonfJ the rim having slots coinciding Withcltliesl'o'ts in therim, Ot'v afcontractible ringzxingthe-ztire having; overlapping ends;.1staal-.boltsseeu'ned'w to rthe; rin grand?4 proj eetingrthrough `theiwslots; in thettire iandarim of thevwheeleih uzbo-n utsforn` thelower endsiofith e :st rid-.bolts providedzwitlr jam-nuts and having oppositely-tlireaded"exeten sions V and; n a sleeve-nnte` engaging the threadedI extensions@ fthe hub-nuts; s'ubsta'n.-

tiafllyffas.- described; v.

A 3. Thecombinatio'n; withfa wheel-having aiconcave frimiandfa hollow elastic tire thereon,

thering andltirevhavinga coinciding slotsg and a contractiblering,uwithin theo-tiren havingf;

lappew endsyofT stud-:bolts secure-.` nea'rtsaich4 endsi an'd passing. through :the slotsxin th'eti re and ,Wheel-,rinn-platesvonA .tlie: bolts covering. z theslots and providediwithwashers;hubinnts.

on thee bolts yprovidedfvvith-;j amen utsiand-havr ing j later-alfJ oppositely-tlireaded: bolti'extens.

sions, and@` anlopposite'lyfthreadedi sleeve-n uta engaging .tha-'laterali Vextensions-flot. tliefh nb``V r n utsysu listan-ti ally. as-describ ed.:

y JESSE "TL" lVIORRIS;A JR;

Witnesses-z i W1' A; a,Finvtrrali;ss,

iNs 

